These Top 5 difficult games on iPad may be tough, but you'll keep coming back for more. We guarantee.

Wayward Souls is a roguelike action-RPG that's been designed to kill you again and again. It's only through starting afresh with greater resources and more experience that you'll be able to push on slightly farther than before. Brutal.

Playing Bobbing is somewhat akin to rubbing your tummy and patting your head at the same time. In fact, screw that... it's far trickier. This cylindrical endless-runner has you altering gravity and switching colours simultaneously, which is enough to scramble your brain.

Vlambeer's fiendish stroke of genius here is that the only way you can progress is to deliberately make life more difficult for yourself. You must collect randomly spawning weapon crates to accrue points, but there's no telling how well you'll be armed to take on the ruthlessly swelling hordes.

Pain Unlimited... sorry, PLATFORMS Unlimited isn't about winning; it's about losing a little better. There are no checkpoints or extra lives in this punishing procedurally generated endless-runner. Just defeats.